<template>
    <div class="xtx-goods-page" v-if="goods">
        <div class="container">
            <!-- 面包屑 -->
            <XtxBread>
                <XtxBreadItem to="/">首页</XtxBreadItem>
                <XtxBreadItem :to="`/category/${goods.categories[1].id}`">{{goods.categories[1].name}}</XtxBreadItem>
                <XtxBreadItem :to="`/category/${goods.categories[0].id}`">{{goods.categories[0].name}}</XtxBreadItem>
                <XtxBreadItem>{{goods.name}}</XtxBreadItem>
            </XtxBread>
            <!-- 商品信息 -->
            <div class="goods-info">
                <div class="media">
                    <GoodsImage :images="goods.mainPictures" />
                    <GoodsSales />
                </div>
                <div class="spec">
                    <GoodsName :goods="goods" />
                    <GoodsSku :goods="goods" skuId="1369155862131642369" @change="changeSku" />
                    <!-- 数量组价 -->
                    <XtxNumbox v-model="num" label="数量" :max="goods.inventory" />
                    <!-- 加入购物车 -->
                    <XtxButton @click="insertCart()" type="primary" style="margin-top:20px">加入购物车</XtxButton>
                </div>
            </div>
            <!-- 商品推荐 -->
            <GoodsRelevant :goodsId="goods.id" />
            <!-- 商品详情 -->
            <div class="goods-footer">
                <div class="goods-article">
                    <!-- 商品+评价 -->
                    <GoodsTabs />
                    <!-- 注意事项 -->
                    <GoodsWarn />
                </div>
                <!-- 24热榜+专题推荐 -->
                <div class="goods-aside">
                    <GoodsHot :goodsId="goods.id" />
                    <GoodsHot :goodsId="goods.id" :type="2" />
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import { nextTick, provide, ref, watch } from "vue";
import GoodsRelevant from "./components/goods-relevant";
import { findGoods } from "@/api/product";
import { useRoute } from "vue-router";
import GoodsImage from "./components/goods-image";
import GoodsSales from './components/goods-sales';
import GoodsName from './components/goods-name';
import GoodsSku from './components/goods-sku';
import GoodsTabs from './components/goods-tabs';
import GoodsHot from './components/goods-hot';
import GoodsWarn from './components/goods-warn'
import { useStore } from 'vuex';
import Message from '@/components/library/Message';
export default {
    name: "XtxGoodsPage",
    components: { GoodsRelevant,GoodsImage,GoodsSales,GoodsName,GoodsSku,GoodsTabs,GoodsHot,GoodsWarn },
    setup() {
        const goods = useGoods();
        provide('goods',goods)
        const changeSku = (sku) => {
            if (sku.skuId) {
                goods.value.price = sku.price
                goods.value.oldPrice = sku.oldPrice
                goods.value.inventory = sku.inventory
            }
            currSku.value = sku
        }
        const num = ref(1)

        // 加入购物车
        const store = useStore()
        const currSku = ref(null)
        const insertCart = () =>{
            if (currSku.value && currSku.value.skuId) {
                // id skuId name picture price nowPrice count attrsText selected stock isEffective
                const { skuId, specsText:attrsText, inventory:stock } = currSku.value
                const { id, name, price, mainPictures } = goods.value
                store.dispatch('cart/insertCart',{
                    skuId,
                    attrsText,
                    stock,
                    id,
                    name,
                    price,
                    nowPrice:price,
                    picture:mainPictures[0],
                    selected:true,
                    isEffective:true,
                    count:num.value,

                }).then(()=>{
                    Message({type:'success',text:'加入购物车成功'})
                })
            }else{
                Message({text:'请选择完整规格'})
            }
        }
        return { goods,changeSku,num,insertCart};
    },
};
const useGoods = () => {
    // 当路由地址发生变化 不会重新初始化组件
    const goods = ref(null);
    const route = useRoute();
    watch(()=>route.params.id,(newVal)=>{
        if (newVal && `/product/${newVal}` === route.path) {
            findGoods(route.params.id).then((data) => {
                // 让商品数据为null让后使用v-if的组件可以重新销毁和创建
                goods.value = null
                nextTick(()=>{
                    goods.value = data.result;
                })
            });
        }
    },{immediate:true})

    return goods
};
</script>

<style scoped lang='less'>
.goods-info {
    min-height: 600px;
    background: #fff;display: flex;
    .media {
        width: 580px;
        height: 600px;
        padding: 30px 50px;
    }
    .spec {
        flex: 1;
        padding: 30px 30px 30px 0;
    }
}
.goods-footer {
    display: flex;
    margin-top: 20px;
    .goods-article {
        width: 940px;
        margin-right: 20px;
    }
    .goods-aside {
        width: 280px;
        min-height: 1000px;
    }
}
.goods-warn {
    min-height: 600px;
    background: #fff;
    margin-top: 20px;
}
</style>